html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-overflow-scrolling:touch;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
a, a.link {
    color:#666;
    text-decoration:none;
    font-weight:500;
}
a, a.link:hover {
    color:#666;
}
code {
    font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
}
.main {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    font-size: 28rpx;
    background-color: #f5f5f5;
    overflow: hidden;
}
.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}
.b-b {
    position: relative;
}
.b-b::after {
    position: absolute;
    z-index: 3;
    left: 0;
    top: auto;
    bottom: 0;
    right: 0;
    height: 0;
    content:"";
    transform: scaleY(.5);
    border-bottom: 2rpx solid #e0e0e0;
}
.round:after {
    content:"";
    position: absolute;
    left: 0;
    top: 0;
    width: 200%;
    height: 200%;
    transform: scale(.5) translate(-50%, -50%);
    border: 1px solid #878787;
    border-radius: 50px;
    box-sizing: border-box;
}
.txt-overflow-s {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}